I'm not sure if the OP knew if there were actual contractions earlier or not. I am sure that she is pre-eclampsic, though, due to Bailey's symptoms yesterday and today and with her responding to the calcium. Her not being able to stand should be reason enough for anyone to get to a vet pronto.
I haven't seen mention of how old Bailey is, her size, her due date, whether an x-ray was done....so much we don't know. Are the pups moving, what's her temp, any discharges? How's she been eating, any signs of hypoglycemia....dehydration?
Just from what we know is cause for alarm. There is a very low probability of this pregnancy going normally. This girl should be seen by a qualified vet now and be under their care through delivery.
Here is a link with some info very much pertaining to your situation.
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Please pay particular attention to item # 3 under "Signs of Whelping Trouble".
I'm not posting this to in any way help coach you through this, but only for you to recognize that your girl has already shown signs of distress (low blood calcium) and this will affect her whelping. Her showing some improvement after taking calcium should tell you that her calcium was low and a few tablets aren't going to 'fix' this. Expect a problem whelp and a very high chance of you having to hand feed these pups....and count yourself lucky if it works out that well.
I can't repeat this enough....Bailey needs to be under a vet's care NOW!!